Just wanted to point out an error in the dats. This is in the Atari ST - Demos - [ST] dat.
Electra Demo (1985-12-21)(Electra)[1MB]
Electra Demo (1985-12-21)(Electra)[a 80 tracks][1MB]
Electra Demo (1985-12-21)(Electra)[a2 80 tracks][1MB]
Electra Demo (1985-12-21)(Electra)[a3 80 tracks][1MB]
Electra Demo (1985-12-21)(Electra)[a4][1MB]
These all have bad dates. The intro screen that shows the date is a joke, and so is the demo that follow it. The real demo is a big reset demo that occurs when hitting the reset button. The demo was actually released in January of 1991.
Sources:
https://demozoo.org/productions/69174/https://www.pouet.net/prod.php?which=11808
